694021098 has 16 divisors (see below), whose sum is σ = 1435906080. Its totient is φ = 223363056.

The previous prime is 694021093. The next prime is 694021121. The reversal of 694021098 is 890120496.

It is not an unprimeable number, because it can be changed into a prime (694021093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1994140 + ... + 1994487.

It is an arithmetic number, because the mean of its divisors is an integer number (89744130).

Almost surely, 2^694021098 is an apocalyptic number.

694021098 is an abundant number, since it is smaller than the sum of its proper divisors (741884982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

694021098 is a wasteful number, since it uses less digits than its factorization.

694021098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3988661.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 694021098 is about 26344.2801761597. The cubic root of 694021098 is about 885.3688219822.

It can be divided in two parts, 69402 and 1098, that added together give a triangular number (70500 = T₃₇₅).

The spelling of 694021098 in words is "six hundred ninety-four million, twenty-one thousand, ninety-eight".